Re: PC/MCA and PC/ISA How do I know which I have? Message #2 Posted by Ellis Easley on 3 June 2003, 11:07 a.m., in response to message #1 by bowdoin Davis
ISA means Industry Standard Architecture, or the IBM PC/AT expansion bus as ultimately specified by a third party (the EISA group - E for Extended). MCA means MicroChannel Architecture, the expansion bus that IBM introduced with the PS/2 computers and quickly abandoned. Unless you have an IBM model 80 (and 70? 60? maybe even 50?) or a Tandy 5000, you don't have MicroChannel.
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